TWI421754B - Capacitive touch device and its control method - Google Patents

Capacitive touch device and its control method Download PDF

Info

Publication number
TWI421754B
TWI421754B TW097112057A TW97112057A TWI421754B TW I421754 B TWI421754 B TW I421754B TW 097112057 A TW097112057 A TW 097112057A TW 97112057 A TW97112057 A TW 97112057A TW I421754 B TWI421754 B TW I421754B
Authority
TW
Taiwan
Prior art keywords
touch
integrated circuit
capacitive touch
touch device
sub
Prior art date
Application number
TW097112057A
Other languages
Chinese (zh)
Other versions
TW200943151A (en
Inventor
Tse Lun Hung
Jung Shou Huang
Hsin Shieh Tsai
Original Assignee
Elan Microelectronics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Elan Microelectronics Corp filed Critical Elan Microelectronics Corp
Priority to TW097112057A priority Critical patent/TWI421754B/en
Priority to JP2008152548A priority patent/JP2009252230A/en
Priority to US12/385,099 priority patent/US8976121B2/en
Publication of TW200943151A publication Critical patent/TW200943151A/en
Application granted granted Critical
Publication of TWI421754B publication Critical patent/TWI421754B/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Description

電容式觸控裝置及其控制方法Capacitive touch device and control method thereof

本發明係有關一種電容式觸控裝置，特別是關於一種使用二個以上陣列電容式(projected capacitance)觸控積體電路(Integrated Circuit；IC)掃描大尺寸觸控面板的電容式觸控裝置及其控制方法。The present invention relates to a capacitive touch device, and more particularly to a capacitive touch device for scanning a large-sized touch panel using two or more arrayed capacitive integrated circuits (ICs) and Its control method.

在傳統應用上，大尺寸電容式觸控螢幕皆使用表面電容式(surface capacitive)感測技術，但表面電容式感測技術是利用流向銀幕各端點的一組電流不同來判別手指的位置，因此當觸碰觸控面板之手指數為二指以上時，回報電流組數仍為一組，故僅能辨別一組絕對座標位置，例如在二維矩陣時僅能回報一組X,Y參數，因而無法達到多指觸控的功能。In traditional applications, large-capacity capacitive touch screens use surface capacitive sensing technology, but surface capacitive sensing technology uses a set of currents flowing to each end of the screen to determine the position of the finger. Therefore, when the hand index of touching the touch panel is two fingers or more, the number of return current groups is still one group, so only one set of absolute coordinate positions can be distinguished, for example, only one set of X, Y parameters can be reported in the two-dimensional matrix. Therefore, the function of multi-finger touch cannot be achieved.

所有觸點可定位(All Points Addressable；APA)型陣列電容式感測技術雖然可以達到多指觸控的功能，但是其需要對每個點感測器(Point Sensor)進行充放電的動作，以矩陣形狀的觸控面板來說，當X軸及Y軸的感應線(trace)增加時，APA型陣列電容式的像素數目將急劇增加，因而造成取像速度(frame rate)下降，故不適用於大尺寸觸控面板的應用。All Point Addressable (APA) array capacitive sensing technology can achieve the function of multi-finger touch, but it needs to charge and discharge each point sensor. In the case of a matrix-shaped touch panel, when the X-axis and Y-axis traces increase, the number of APA-type array capacitive pixels will increase sharply, resulting in a decrease in frame rate, so it is not applicable. For large-size touch panel applications.

另一種軸交錯(Axis Intersect；AI)型陣列電容式感測技術也同樣能達到多指觸控的功能。圖1顯示傳統應用 在小尺寸觸控面板的AI型陣列電容式感測技術，其包括一小尺寸觸控面板10以及一AI型陣列電容式觸控IC 12掃描觸控面板10，以一最大可支援掃描22條感應線的AI型陣列電容式觸控IC 12為例來說，雖然應用在X軸及Y軸各有10條感應線TRX1~TRX10及TRY1~TRY10的小尺寸觸控面板10時取像速度還不錯，但是若要將AI型陣列電容式觸控IC 12應用於X軸及Y軸各有40條感應線TRX1~TRX40及TRY1~TRY40的大尺寸觸控面板14時，如圖2所示，則必須增加AI型陣列電容式觸控IC 12可掃描的總感應線數量，然而，觸控IC 12每次對電容充放電所花費的時間佔整體觸控面板應用上的取像速度的比例非常大，也就是說取像速度問題主要由IC 12每個框(frame)對電容充放電所決定，故以增加可掃描感應線數的方法應用於大尺寸觸控面板14將會有一非常大的缺點，就是整體應用上的取像速度將會嚴重下降，進而影響應用端的效能。Another type of Axis Intersect (AI) array capacitive sensing technology can also achieve multi-finger touch function. Figure 1 shows the traditional application The AI-type array capacitive sensing technology of the small-sized touch panel includes a small-sized touch panel 10 and an AI-type array capacitive touch IC 12 for scanning the touch panel 10 to support up to 22 scans. The AI-type array capacitive touch IC 12 of the sensing line is used as an example, although the image capturing speed is also applied when the X-axis and the Y-axis each have 10 sensing lines TRX1~TRX10 and TRY1~TRY10 small-sized touch panel 10. Yes, but if you want to apply the AI-type array capacitive touch IC 12 to the large-size touch panel 14 with 40 sensing lines TRX1~TRX40 and TRY1~TRY40 on the X-axis and Y-axis, as shown in Figure 2, The total number of sensing lines that the AI-type capacitive touch control IC 12 can scan can be increased. However, the time taken by the touch IC 12 to charge and discharge the capacitors is very large in the total image capturing speed of the touch panel application. Large, that is to say, the image capturing speed problem is mainly determined by the charging and discharging of the capacitor by each frame of the IC 12, so the method of increasing the number of scanable sensing lines applied to the large-sized touch panel 14 will have a very large The disadvantage is that the image capture speed of the overall application will be seriously reduced, and thus the shadow End application performance.

因此，一種應用於大尺寸面板且具有多指觸控功能以及良好取像速度的感測方法，乃為所冀。Therefore, a sensing method applied to a large-sized panel and having a multi-finger touch function and a good image capturing speed is a problem.

本發明的目的之一，在於提出一種使用二個以上陣列電容式觸控IC掃描大尺寸觸控面板的電容式觸控裝置及其控制方法。One of the objectives of the present invention is to provide a capacitive touch device that scans a large-sized touch panel using two or more array capacitive touch ICs and a control method thereof.

本發明的目的之一，在於提出一種應用在大尺寸觸控 面板且具有多指觸控功能及良好取像速度的電容式觸控裝置及其控制方法。One of the objects of the present invention is to provide an application for large-size touch. A capacitive touch device having a multi-finger touch function and a good image capturing speed and a control method thereof.

根據本發明，一種電容式觸控裝置及其控制方法包括一大尺寸的觸控面板、至少一第一積體電路以及一第二積體電路。其中該至少一第一積體電路主要負責掃描該觸控面板，若有需要該至少一第一積體電路也可以加入部分運算於其中。該第二積體電路主要用於控制該電容式觸控裝置的整體運作、將來自該至少一第一積體電路的掃描資料進行最後運算以及與外部溝通，此外該第二積體電路也可以參與掃描工作。According to the present invention, a capacitive touch device and a control method thereof include a touch panel of a large size, at least a first integrated circuit, and a second integrated circuit. The at least one first integrated circuit is mainly responsible for scanning the touch panel, and the at least one first integrated circuit may also be added to the partial operation if necessary. The second integrated circuit is mainly used for controlling the overall operation of the capacitive touch device, performing final calculation and external communication on the scanned data from the at least one first integrated circuit, and the second integrated circuit can also Participate in the scanning work.

圖3顯示本發明的第一實施例，電容式觸控裝置20包括大尺寸觸控面板22以及二個AI型陣列電容式觸控IC 24及26，其中觸控面板22具有m條感應線TR1~TRm，副觸控IC 24由感應線TR1開始掃描直至感應線TRn，主觸控IC 26可以由感應線TRn或TRn＋1開始掃描至感應線TRm，以避免同時對同一條感應線進行充放電；當然反過來，副觸控IC 24可以由感應線TRn開始掃描直至感應線TR1，此時主觸控IC 26由感應線TRm開始掃描至感應線TRn或TRn＋1，主觸控IC 26送出時脈CLK給副觸控IC 24以同步抓取副觸控IC 24的資料，副觸控IC 24將掃描後得到的掃描資料SDA傳送給主觸控IC 26，主觸控IC 26將來自副觸控IC 24的掃描資料SDA及自身掃描所得的結 果進行最後運算以判斷物件在觸控面板22上的位置，此外主觸控IC 26還控制電容式觸控裝置20的整體運作以及負責與外部溝通，而副觸控IC 24也可以加入部份運算於其中以降低主觸控IC 26的負荷，例如，副觸控IC 24可以先將其掃描的結果先進行運算，之後再將運算後的掃描資料SDA傳送給主觸控IC 26。由於觸控IC 24及26可以同時進行掃描而且各只負責掃描部分感應線，假設m＝40而n＝20，因此只要花費掃描20條感應線的時間便可以將具有40條感應線的觸控面板22掃描一遍，故可以有效的改善取像速度。3 shows a first embodiment of the present invention. The capacitive touch device 20 includes a large-size touch panel 22 and two AI-type capacitive touch ICs 24 and 26, wherein the touch panel 22 has m sensing lines TR1. ~TRm, the sub-touch IC 24 starts scanning from the sensing line TR1 until the sensing line TRn, and the main touch IC 26 can be scanned from the sensing line TRn or TRn+1 to the sensing line TRm to avoid charging and discharging the same sensing line at the same time; Of course, the sub-touch IC 24 can start scanning from the sensing line TRn until the sensing line TR1. At this time, the main touch IC 26 starts scanning from the sensing line TRm to the sensing line TRn or TRn+1, and the main touch IC 26 sends the clock CLK. The sub-touch IC 24 synchronously captures the data of the sub-touch IC 24, and the sub-touch IC 24 transmits the scanned scan data SDA to the main touch IC 26, and the main touch IC 26 will be from the sub-touch IC. 24 scan data SDA and self-scanning knot The final operation is performed to determine the position of the object on the touch panel 22. The main touch IC 26 also controls the overall operation of the capacitive touch device 20 and is responsible for communicating with the outside, and the sub-touch IC 24 can also be added to the portion. The operation is performed to reduce the load of the main touch IC 26. For example, the sub-touch IC 24 may first calculate the result of the scan, and then transfer the calculated scan data SDA to the main touch IC 26. Since the touch ICs 24 and 26 can scan simultaneously and each is only responsible for scanning part of the sensing lines, assuming m=40 and n=20, the touch with 40 sensing lines can be performed as long as the time of scanning 20 sensing lines is spent. The panel 22 is scanned once, so that the image taking speed can be effectively improved.

圖4顯示本發明的第二實施例，在電容式觸控裝置30中，使用三個AI型陣列電容式觸控IC 34、36及38來掃描大尺寸觸控面板32，其中觸控面板32具有m條感應線TR1~TRm，副觸控IC 34由感應線TR1開始掃描直至感應線TRk，副觸控IC 36由感應線TRk或TRk＋1開始掃描至感應線TRn，主觸控IC 38由感應線TRn或TRn＋1開始掃描至感應線TRm，主觸控IC 38送出時脈CLK給副觸控IC 34及36，並且利用位址(address)信號AD來選擇副觸控IC 34及36，副觸控IC 34及36將掃描後得到的掃描資料SDA傳送給主觸控IC 38，主觸控IC 38將來自副觸控IC 34及36的掃描資料SDA及自身掃描所得的結果進行最後運算以判斷物件在觸控面板32上的位置，同時主觸控IC 38還負責控制電容式觸控裝置30的整體運作以及與外部溝通，而副觸控IC 34及36除了負責掃描之外，也可 以加入部份運算於其中以降低主觸控IC 38的負荷。由於觸控IC 34、36及38可以同時進行掃描而且各只負責掃描部分感應線，故可以有效的改善取像速度。4 shows a second embodiment of the present invention. In the capacitive touch device 30, three AI-type array capacitive touch ICs 34, 36 and 38 are used to scan the large-sized touch panel 32, wherein the touch panel 32 There are m sensing lines TR1~TRm, the sub-touch IC 34 starts scanning from the sensing line TR1 until the sensing line TRk, and the sub-touch IC 36 starts scanning from the sensing line TRk or TRk+1 to the sensing line TRn, and the main touch IC 38 is induced. The line TRn or TRn+1 starts scanning to the sensing line TRm, the main touch IC 38 sends the clock CLK to the sub-touch ICs 34 and 36, and uses the address signal AD to select the sub-touch ICs 34 and 36. The control ICs 34 and 36 transmit the scan data SDA obtained after scanning to the main touch IC 38, and the main touch IC 38 performs the final calculation on the scan data SDA from the sub touch ICs 34 and 36 and the self scan result to determine The position of the object on the touch panel 32, and the main touch IC 38 is also responsible for controlling the overall operation of the capacitive touch device 30 and communicating with the outside, and the sub touch ICs 34 and 36 are not only responsible for scanning, but also Part of the operation is added to reduce the load on the main touch IC 38. Since the touch ICs 34, 36, and 38 can scan simultaneously and each is only responsible for scanning a part of the sensing line, the image capturing speed can be effectively improved.

圖5為本發明的第三實施例，電容式觸控裝置40包括大尺寸觸控面板42及三個AI型陣列電容式觸控IC 44、46及48，其中觸控面板42具有m條感應線TR1~TRm，副觸控IC 44由感應線TR1開始掃描直至感應線TRn，副觸控IC 46由感應線TRn或TRn＋1開始掃描至感應線TRm，主觸控IC 48不參與掃描工作，其只負責控制整體運作、接收資料、進行最後運算及與外部溝通，主觸控IC 48送出時脈CLK給副觸控IC 44及46，並且利用位址信號AD來選擇副觸控IC 44及46，副觸控IC 44及46將掃描後得到的掃描資料SDA傳送給主觸控IC 48，主觸控IC 48將來自副觸控IC 44及46的掃描資料SDA進行最後運算以判斷物件在觸控面板42上的位置。副觸控IC 44及46除了負責掃描之外，也可以加入部份運算於其中以降低主觸控IC 48的負荷。由於副觸控IC 44及46可以同時進行掃描而且各只負責掃描部分感應線，故可以有效的改善取像速度。在其他實施例中，也可以用其他具有運算功能的IC來取代AI型陣列電容式觸控IC 48。5 is a third embodiment of the present invention, the capacitive touch device 40 includes a large-size touch panel 42 and three AI-type array capacitive touch ICs 44, 46, and 48, wherein the touch panel 42 has m sensing The line TR1~TRm, the sub-touch IC 44 starts scanning from the sensing line TR1 until the sensing line TRn, and the sub-touch IC 46 starts scanning from the sensing line TRn or TRn+1 to the sensing line TRm, and the main touch IC 48 does not participate in the scanning operation. Only responsible for controlling the overall operation, receiving data, performing final calculations and communicating with the outside, the main touch IC 48 sends the clock CLK to the sub-touch ICs 44 and 46, and uses the address signal AD to select the sub-touch ICs 44 and 46. The sub-touch ICs 44 and 46 transmit the scanned data SDA obtained after scanning to the main touch IC 48. The main touch IC 48 performs the final operation on the scan data SDA from the sub-touch ICs 44 and 46 to determine that the object is in touch. The position on the control panel 42. In addition to being responsible for scanning, the sub-touch ICs 44 and 46 may also incorporate partial operations therein to reduce the load on the main touch IC 48. Since the sub-touch ICs 44 and 46 can scan simultaneously and each is only responsible for scanning a part of the sensing line, the image capturing speed can be effectively improved. In other embodiments, the AI type capacitive touch control IC 48 can also be replaced by other ICs with arithmetic functions.

圖6顯示本發明的第四實施例，電容式觸控裝置50包括大尺寸觸控面板52及五個AI型陣列電容式觸控IC 54、56、58、60及62，其中副觸控IC 54及56在觸控面板52的左方，副觸控IC 54在副觸控IC 56的上方，副 觸控IC 58及60位於觸控面板52的下方，副觸控IC 58在副觸控IC 60的左方。觸控面板52的X軸及Y軸各具有40條感應線TRX1~TRX40及TRY1~TRY40，副觸控IC 58由感應線TRX1開始掃描至感應線TRX20，副觸控IC 60由感應線TRX20或TRX21開始掃描至感應線TRX40，副觸控IC 56由感應線TRY1開始掃描至感應線TRY20，副觸控IC 54由感應線TRY20或TRY21開始掃描至感應線TRY40，主觸控IC 62不參與掃描工作，其只負責控制整體運作、接收資料、進行最後運算及與外部溝通，主觸控IC 62送出時脈CLK給副觸控IC 54、56、58及60，並且以位址信號AD來選擇副觸控IC 54、56、58及60，副觸控IC 54、56、58及60將掃描後得到的掃描資料SDA傳送給主觸控IC 62，主觸控IC 62將來自副觸控IC 54、56、58及60的掃描資料SDA進行最後運算以判斷物件在觸控面板52上的位置。副觸控IC 54、56、58及60除了負責掃描之外，也可以加入部份運算於其中以降低主觸控IC 62的負荷。由於副觸控IC 54、56、58及60可以同時進行掃描而且各只負責掃描部分感應線，故可以有效的改善取像速度。在其他實施例中，也可以用其他具有運算功能的IC來取代AI型陣列電容式觸控IC 62。6 shows a fourth embodiment of the present invention. The capacitive touch device 50 includes a large-size touch panel 52 and five AI-type array capacitive touch ICs 54, 56, 58, 60, and 62, wherein the sub-touch IC 54 and 56 are on the left side of the touch panel 52, and the sub touch IC 54 is above the sub touch IC 56. The touch ICs 58 and 60 are located below the touch panel 52, and the sub-touch ICs 58 are located to the left of the sub-touch ICs 60. The X-axis and the Y-axis of the touch panel 52 each have 40 sensing lines TRX1~TRX40 and TRY1~TRY40, and the sub-touch IC 58 starts scanning from the sensing line TRX1 to the sensing line TRX20, and the sub-touch IC 60 is connected by the sensing line TRX20 or The TRX 21 starts scanning to the sensing line TRX40, and the sub-touch IC 56 starts scanning from the sensing line TRY1 to the sensing line TRY20. The sub-touch IC 54 starts scanning from the sensing line TRY20 or TRY21 to the sensing line TRY40, and the main touch IC 62 does not participate in the scanning. Work, it is only responsible for controlling the overall operation, receiving data, performing final calculations and communicating with the outside. The main touch IC 62 sends the clock CLK to the sub-touch ICs 54, 56, 58 and 60, and selects with the address signal AD. The sub touch ICs 54, 56, 58 and 60, the sub touch ICs 54, 56, 58 and 60 transmit the scanned scan data SDA to the main touch IC 62, and the main touch IC 62 will be from the sub touch IC. The scan data SDA of 54, 56, 58 and 60 performs a final operation to determine the position of the object on the touch panel 52. In addition to being responsible for scanning, the sub-touch ICs 54, 56, 58, and 60 may also incorporate partial operations therein to reduce the load on the main touch IC 62. Since the sub-touch ICs 54, 56, 58 and 60 can scan simultaneously and each is only responsible for scanning a part of the sensing line, the image capturing speed can be effectively improved. In other embodiments, the AI type capacitive touch control IC 62 may be replaced by another IC having an arithmetic function.

圖7顯示本發明的第五實施例，電容式觸控裝置70包括大尺寸觸控面板72及五個AI型陣列電容式觸控IC 74、76、78、80及82，其中副觸控IC 74及76位於觸控面板72的右上方，副觸控IC 74在副觸控IC 76的右上 方，副觸控IC 78及80位於觸控面板72的左下方，副觸控IC 78在副觸控IC 80的右上方。觸控面板72的X軸及Y軸各具有40條感應線TRX1~TRX40及TRY1~TRY40，副觸控IC 78掃描感應線TRX1~TRX10及TRY1~TRY10，副觸控IC 80掃描感應線TRX11~TRX20及TRY11~TRY20，副觸控IC 74掃描感應線TRX21~TRX30及TRY21~TRY30，副觸控IC 76掃描感應線TRX31~TRX40及TRY31~TRY40，主觸控IC 82不參與掃描工作，其只負責控制整體運作、接收資料、進行最後運算及與外部溝通，主觸控IC 82送出時脈CLK給副觸控IC 74、76、78及80，並且以位址信號AD來選擇副觸控IC 74、76、78及80，副觸控IC 74、76、78及80將掃描後得到的掃描資料SDA傳送給主觸控IC 82以進行最後運算。副觸控IC 74、76、78及80除了負責掃描之外，也可以加入部份運算於其中以降低主觸控IC 82的負荷。由於副觸控IC 74、76、78及80可以同時進行掃描而且各只負責掃描部分感應線，故可以有效的改善取像速度。在其他實施例中，也可以用其他具有運算功能的IC來取代AI型陣列電容式觸控IC 82。FIG. 7 shows a fifth embodiment of the present invention. The capacitive touch device 70 includes a large-size touch panel 72 and five AI-type array capacitive touch ICs 74, 76, 78, 80, and 82, wherein the sub-touch IC 74 and 76 are located at the upper right of the touch panel 72, and the sub touch IC 74 is at the upper right of the sub touch IC 76. The sub touch ICs 78 and 80 are located at the lower left of the touch panel 72, and the sub touch IC 78 is at the upper right of the sub touch IC 80. The X-axis and the Y-axis of the touch panel 72 each have 40 sensing lines TRX1~TRX40 and TRY1~TRY40, the sub-touch IC 78 scans the sensing lines TRX1~TRX10 and TRY1~TRY10, and the sub-touch IC 80 scans the sensing line TRX11~ TRX20 and TRY11~TRY20, sub-touch IC 74 scanning sensing lines TRX21~TRX30 and TRY21~TRY30, sub-touch IC 76 scanning sensing lines TRX31~TRX40 and TRY31~TRY40, the main touch IC 82 does not participate in scanning work, it only Responsible for controlling the overall operation, receiving data, performing final calculations and communicating with the outside, the main touch IC 82 sends the clock CLK to the sub-touch ICs 74, 76, 78 and 80, and selects the sub-touch IC with the address signal AD. 74, 76, 78 and 80, the sub-touch ICs 74, 76, 78 and 80 transmit the scanned data SDA obtained after scanning to the main touch IC 82 for final calculation. In addition to being responsible for scanning, the sub-touch ICs 74, 76, 78, and 80 may also incorporate partial operations therein to reduce the load on the main touch IC 82. Since the sub-touch ICs 74, 76, 78, and 80 can scan simultaneously and each is only responsible for scanning a part of the sensing line, the image capturing speed can be effectively improved. In other embodiments, the AI type capacitive touch control IC 82 can also be replaced by another IC having an arithmetic function.

圖8顯示本發明的第六實施例，電容式觸控裝置90包括大尺寸觸控面板92及五個AI型陣列電容式觸控IC 94、96、98、100及102，其中副觸控IC 94、96、98及100皆位於觸控面板92的左下方，副觸控IC 94在副觸控IC 96的右上方，副觸控IC 96在副觸控IC 98的右上方，副觸控IC 98在副觸控IC 100的右上方。觸控面板92的 X軸及Y軸各具有40條感應線TRX1~TRX40及TRY1~TRY40，副觸控IC 94掃描感應線TRX1~TRX10及TRY1~TRY10，副觸控IC 96掃描感應線TRX11~TRX20及TRY11~TRY20，副觸控IC 98掃描感應線TRX21~TRX30及TRY21~TRY30，副觸控IC 100掃描感應線TRX31~TRX40及TRY31~TRY40，主觸控IC 102不參與掃描工作，其只負責控制整體運作、接收資料、進行最後運算及與外部溝通，主觸控IC 102送出時脈CLK給副觸控IC 94、96、98及100，並且以位址信號AD來選擇副觸控IC 94、96、98及100，副觸控IC 94、96、98及100將掃描後得到的掃描資料SDA傳送給主觸控IC 102以進行最後運算。副觸控IC 94、96、98及100除了負責掃描之外，也可以加入部份運算於其中以降低主觸控IC 102的負荷。由於副觸控IC 94、96、98及100可以同時進行掃描而且各只負責掃描部分感應線，故可以有效的改善取像速度。在其他實施例中，也可以用其他具有運算功能的IC來取代AI型陣列電容式觸控IC 102。FIG. 8 shows a sixth embodiment of the present invention. The capacitive touch device 90 includes a large-size touch panel 92 and five AI-type array capacitive touch ICs 94, 96, 98, 100, and 102, wherein the sub-touch IC 94, 96, 98, and 100 are located at the lower left of the touch panel 92, the sub-touch IC 94 is at the upper right of the sub-touch IC 96, and the sub-touch IC 96 is at the upper right of the sub-touch IC 98. The IC 98 is on the upper right side of the sub touch IC 100. Touch panel 92 The X-axis and the Y-axis each have 40 sensing lines TRX1~TRX40 and TRY1~TRY40, the sub-touch IC 94 scan sensing lines TRX1~TRX10 and TRY1~TRY10, and the sub-touch IC 96 scanning sensing lines TRX11~TRX20 and TRY11~TRY20 The sub touch IC 98 scans the sensing lines TRX21~TRX30 and TRY21~TRY30, and the sub touch IC 100 scans the sensing lines TRX31~TRX40 and TRY31~TRY40. The main touch IC 102 does not participate in the scanning work, and it is only responsible for controlling the overall operation. Receiving data, performing final calculations, and communicating with the outside, the main touch IC 102 sends the clock CLK to the sub touch ICs 94, 96, 98, and 100, and selects the sub touch ICs 94, 96, and 98 with the address signals AD. And 100, the sub touch ICs 94, 96, 98, and 100 transmit the scan data SDA obtained after the scan to the main touch IC 102 for final calculation. In addition to being responsible for scanning, the sub-touch ICs 94, 96, 98, and 100 may also incorporate partial operations therein to reduce the load on the main touch IC 102. Since the sub-touch ICs 94, 96, 98, and 100 can scan simultaneously and each is only responsible for scanning a part of the sensing line, the image capturing speed can be effectively improved. In other embodiments, the AI-type array capacitive touch IC 102 can also be replaced with other ICs having operational functions.

圖9顯示本發明的第七實施例，電容式觸控裝置110包括大尺寸觸控面板112及五個AI型陣列電容式觸控IC 114、116、118、120及122，其中副觸控IC 114及116位於觸控面板112的左下方，副觸控IC 114在副觸控IC 116的左下方，副觸控IC 118及120位於觸控面板112的右下方，副觸控IC 118在副觸控IC 120的左上方。觸控面板112的X軸及Y軸各具有40條感應線TRX1~TRX40及 TRY1~TRY40，副觸控IC 116掃描感應線TRX1~TRX10及TRY1~TRY10，副觸控IC 114掃描感應線TRX11~TRX20及TRY11~TRY20，副觸控IC 120掃描感應線TRX21~TRX30及TRY31~TRY40，副觸控IC 118掃描感應線TRX31~TRX40及TRY21~TRY30，主觸控IC 122不參與掃描工作，其只負責控制整體運作、接收資料、進行最後運算及與外部溝通，主觸控IC 122送出時脈CLK給副觸控IC 114、116、118及120，並且以位址信號AD來選擇副觸控IC 114、116、118及120，副觸控IC 114、116、118及120將掃描後得到的掃描資料SDA傳送給主觸控IC 122以進行最後運算。副觸控IC 114、116、118及120除了負責掃描之外，也可以加入部份運算於其中A降低主觸控IC 122的負荷。由於副觸控IC 114、116、118及120可以同時進行掃描而且各只負責掃描部分感應線，故可以有效的改善取像速度。在其他實施例中，也可以用其他具有運算功能的IC來取代AI型陣列電容式觸控IC 122。FIG. 9 shows a seventh embodiment of the present invention. The capacitive touch device 110 includes a large-size touch panel 112 and five AI-type array capacitive touch ICs 114, 116, 118, 120, and 122, wherein the sub-touch IC 114 and 116 are located at the lower left of the touch panel 112, the sub-touch IC 114 is at the lower left of the sub-touch IC 116, the sub-touch ICs 118 and 120 are located at the lower right of the touch panel 112, and the sub-touch IC 118 is at the lower side. The upper left of the touch IC 120. The X-axis and the Y-axis of the touch panel 112 each have 40 sensing lines TRX1 to TRX40 and TRY1~TRY40, sub-touch IC 116 scanning sensing lines TRX1~TRX10 and TRY1~TRY10, sub-touch IC 114 scanning sensing lines TRX11~TRX20 and TRY11~TRY20, sub-touch IC 120 scanning sensing lines TRX21~TRX30 and TRY31~ TRY40, sub-touch IC 118 scans the sensing lines TRX31~TRX40 and TRY21~TRY30, the main touch IC 122 does not participate in the scanning work, it is only responsible for controlling the overall operation, receiving data, performing final calculation and communication with the outside, the main touch IC 122 sends the clock CLK to the sub-touch ICs 114, 116, 118 and 120, and selects the sub-touch ICs 114, 116, 118 and 120 with the address signals AD, and the sub-touch ICs 114, 116, 118 and 120 will The scanned data SDA obtained after scanning is transmitted to the main touch IC 122 for final calculation. In addition to being responsible for scanning, the sub-touch ICs 114, 116, 118, and 120 may also add partial operations to which A reduces the load of the main touch IC 122. Since the sub-touch ICs 114, 116, 118, and 120 can scan simultaneously and each is only responsible for scanning a part of the sensing line, the image capturing speed can be effectively improved. In other embodiments, the AI type capacitive touch control IC 122 may be replaced by another IC having an arithmetic function.

圖6至圖9顯示了四種不同的佈局，隨著副觸控IC擺放的位置的改變，感應線與副觸控IC之間的走線長度也將產生變化，這將影響電容式觸控裝置的效能，此外，在圖5至圖9中，由於主控IC 48、62、82、102以及112並不負責掃描面板，故不一定要用電容式觸控IC，以一般IC取代亦可。再者，在圖3至圖9中，也可以用其他陣列電容式觸控IC來取代AI型陣列電容式觸控IC，例如，APA型陣列電容式觸控IC。Figure 6 to Figure 9 show four different layouts. As the position of the sub-touch IC changes, the length of the trace between the sensing line and the sub-touch IC will also change, which will affect the capacitive touch. The performance of the control device, in addition, in FIG. 5 to FIG. 9, since the main control ICs 48, 62, 82, 102, and 112 are not responsible for scanning the panel, it is not necessary to use a capacitive touch IC to replace the general IC. can. Furthermore, in FIG. 3 to FIG. 9, other array capacitive touch ICs can be used instead of the AI type capacitive touch control IC, for example, an APA type array capacitive touch IC.

10‧‧‧觸控面板10‧‧‧Touch panel

12‧‧‧觸控IC12‧‧‧Touch IC

14‧‧‧觸控面板14‧‧‧Touch panel

20‧‧‧電容式觸控裝置20‧‧‧Capacitive touch device

22‧‧‧觸控面板22‧‧‧Touch panel

24‧‧‧觸控IC24‧‧‧Touch IC

26‧‧‧觸控IC26‧‧‧Touch IC

30‧‧‧電容式觸控裝置30‧‧‧Capacitive touch device

32‧‧‧觸控面板32‧‧‧Touch panel

34‧‧‧觸控IC34‧‧‧Touch IC

36‧‧‧觸控IC36‧‧‧Touch IC

38‧‧‧觸控IC38‧‧‧Touch IC

40‧‧‧電容式觸控裝置40‧‧‧Capacitive touch device

42‧‧‧觸控面板42‧‧‧Touch panel

44‧‧‧觸控IC44‧‧‧Touch IC

46‧‧‧觸控IC46‧‧‧ Touch IC

48‧‧‧觸控IC48‧‧‧ Touch IC

50‧‧‧電容式觸控裝置50‧‧‧Capacitive touch device

52‧‧‧觸控面板52‧‧‧Touch panel

54‧‧‧觸控IC54‧‧‧Touch IC

56‧‧‧觸控IC56‧‧‧Touch IC

58‧‧‧觸控IC58‧‧‧Touch IC

60‧‧‧觸控IC60‧‧‧Touch IC

62‧‧‧觸控IC62‧‧‧Touch IC

70‧‧‧電容式觸控裝置70‧‧‧Capacitive touch device

72‧‧‧觸控面板72‧‧‧ touch panel

74‧‧‧觸控IC74‧‧‧Touch IC

76‧‧‧觸控IC76‧‧‧Touch IC

78‧‧‧觸控IC78‧‧‧Touch IC

80‧‧‧觸控IC80‧‧‧Touch IC

82‧‧‧觸控IC82‧‧‧Touch IC

90‧‧‧電容式觸控裝置90‧‧‧Capacitive touch device

92‧‧‧觸控面板92‧‧‧Touch panel

94‧‧‧觸控IC94‧‧‧Touch IC

96‧‧‧觸控IC96‧‧‧Touch IC

98‧‧‧觸控IC98‧‧‧Touch IC

100‧‧‧觸控IC100‧‧‧Touch IC

102‧‧‧觸控IC102‧‧‧Touch IC

110‧‧‧電容式觸控裝置110‧‧‧Capacitive touch device

112‧‧‧觸控面板112‧‧‧Touch panel

114‧‧‧觸控IC114‧‧‧Touch IC

116‧‧‧觸控IC116‧‧‧Touch IC

118‧‧‧觸控IC118‧‧‧Touch IC

120‧‧‧觸控IC120‧‧‧Touch IC

122‧‧‧觸控IC122‧‧‧Touch IC

圖1顯示傳統應用在小尺寸觸控面板的AI型陣列電容式感測技術；圖2顯示傳統應用在大尺寸觸控面板的AI型陣列電容式感測技術；圖3顯示本發明的第一實施例；圖4顯示本發明的第二實施例；圖5顯示本發明的第三實施例；圖6顯示本發明的第四實施例；圖7顯示本發明的第五實施例；圖8顯示本發明的第六實施例；以及圖9顯示本發明的第七實施例。FIG. 1 shows an AI-type array capacitive sensing technology conventionally applied to a small-sized touch panel; FIG. 2 shows an AI-type array capacitive sensing technology conventionally applied to a large-sized touch panel; FIG. 3 shows the first aspect of the present invention. Embodiments; Figure 4 shows a second embodiment of the present invention; Figure 5 shows a third embodiment of the present invention; Figure 6 shows a fourth embodiment of the present invention; Figure 7 shows a fifth embodiment of the present invention; A sixth embodiment of the present invention; and Fig. 9 shows a seventh embodiment of the present invention.

20‧‧‧電容式觸控裝置20‧‧‧Capacitive touch device

22‧‧‧觸控面板22‧‧‧Touch panel

24‧‧‧觸控IC24‧‧‧Touch IC

26‧‧‧觸控IC26‧‧‧Touch IC

Claims (20)

一種電容式觸控裝置，包括：一觸控面板；至少一第一積體電路；以及一第二積體電路，與該至少一第一積體電路共同掃描該觸控面板，該第二積體電路接收來自該至少一第一積體電路的掃描資料進行運算以判斷一物件在該觸控面板上的位置。 A capacitive touch device includes: a touch panel; at least one first integrated circuit; and a second integrated circuit that scans the touch panel together with the at least one first integrated circuit, the second product The body circuit receives the scan data from the at least one first integrated circuit to perform an operation to determine the position of an object on the touch panel. 如請求項1之電容式觸控裝置，其中該至少一第一積體電路包括軸交錯型陣列電容式觸控積體電路。 The capacitive touch device of claim 1, wherein the at least one first integrated circuit comprises a shaft interleaved array capacitive touch integrated circuit. 如請求項1之電容式觸控裝置，其中該至少一第一積體電路將各自掃描的結果進行運算以產生該掃描資料。 The capacitive touch device of claim 1, wherein the at least one first integrated circuit operates the results of the respective scans to generate the scanned data. 如請求項1之電容式觸控裝置，其中該第二積體電路包括軸交錯型陣列電容式觸控積體電路。 The capacitive touch device of claim 1, wherein the second integrated circuit comprises a shaft interleaved array capacitive touch integrated circuit. 如請求項1之電容式觸控裝置，其中該第二積體電路控制該電容式觸控裝置的整體運作。 The capacitive touch device of claim 1, wherein the second integrated circuit controls the overall operation of the capacitive touch device. 如請求項1之電容式觸控裝置，其中該第二積體電路負責與外部溝通。 The capacitive touch device of claim 1, wherein the second integrated circuit is responsible for communicating with the outside. 一種電容式觸控裝置的控制方法，該電容式觸控裝置包含一觸控面板，該控制方法包括下列步驟：以至少一第一積體電路及一第二積體電路掃描該觸控面板；將該至少一第一積體電路掃描後得到的掃描資 料傳送至該第二積體電路；以及藉由該第二積體電路運算該掃描資料以及自身掃描的結果以判斷在該觸控面板上物件的位置。 A capacitive touch device includes a touch panel, the control method comprising the steps of: scanning the touch panel with at least a first integrated circuit and a second integrated circuit; Scanning the scanned image obtained by scanning the at least one first integrated circuit Transferring the material to the second integrated circuit; and calculating the scan data and the result of the self scan by the second integrated circuit to determine the position of the object on the touch panel. 如請求項7之控制方法，更包括藉由該至少一第一積體電路運算各自掃描的結果產生該掃描資料。 The control method of claim 7, further comprising generating the scan data by calculating the result of the respective scan by the at least one first integrated circuit. 如請求項7之控制方法，更包括經由該第二積體電路與外部溝通。 The control method of claim 7, further comprising communicating with the outside via the second integrated circuit. 如請求項7之控制方法，更包括利用該第二積體電路控制該電容式觸控裝置的整體運作。 The control method of claim 7 further includes controlling the overall operation of the capacitive touch device by using the second integrated circuit. 一種電容式觸控裝置，包括：一觸控面板；多個第一積體電路，用以對該觸控面板的多條感應線進行掃描，以產生多個掃描資料，該掃描動作包括對該感應線進行充放電；以及一第二積體電路，接收該多個掃描資料進行運算以判斷一物件在該觸控面板上的位置。 A capacitive touch device includes: a touch panel; a plurality of first integrated circuits for scanning a plurality of sensing lines of the touch panel to generate a plurality of scan data, the scanning action comprising The sensing line is charged and discharged; and a second integrated circuit receives the plurality of scan data for calculation to determine the position of an object on the touch panel. 如請求項11之電容式觸控裝置，其中該多個第一積體電路包括軸交錯型陣列電容式觸控積體電路。 The capacitive touch device of claim 11, wherein the plurality of first integrated circuits comprise a shaft interleaved array capacitive touch integrated circuit. 如請求項11之電容式觸控裝置，其中該多個第一積體電路將各自掃描的結果進行運算以產生該多個掃描資料。 The capacitive touch device of claim 11, wherein the plurality of first integrated circuits operate on the results of the respective scans to generate the plurality of scan data. 如請求項11之電容式觸控裝置，其中該第二積體電路包括軸交錯型陣列電容式觸控積體電路。 The capacitive touch device of claim 11, wherein the second integrated circuit comprises an axis-interleaved array capacitive touch integrated circuit. 如請求項11之電容式觸控裝置，其中該第二積體電路控制該電容式觸控裝置的整體運作。 The capacitive touch device of claim 11, wherein the second integrated circuit controls the overall operation of the capacitive touch device. 如請求項11之電容式觸控裝置，其中該第二積體電路負責與外部溝通。 The capacitive touch device of claim 11, wherein the second integrated circuit is responsible for communicating with the outside. 一種電容式觸控裝置的控制方法，該控制方法包括下列步驟：以多個第一積體電路掃描一觸控面板的多條感應線以產生多個掃描資料，該掃描動作包括對該感應線進行充放電；將該多個掃描資料傳送至一第二積體電路；以及藉由該第二積體電路運算該多個掃描資料以判斷在該觸控面板上物件的位置。 A control method for a capacitive touch device, the control method comprising the steps of: scanning a plurality of sensing lines of a touch panel with a plurality of first integrated circuits to generate a plurality of scan data, the scanning action comprising the sensing line Performing charging and discharging; transmitting the plurality of scan data to a second integrated circuit; and calculating the plurality of scan data by the second integrated circuit to determine the position of the object on the touch panel. 如請求項17之控制方法，其中產生該多個掃描資料的步驟包括藉由該多個第一積體電路運算各自掃描的結果產生該多個掃描資料。 The method of claim 17, wherein the step of generating the plurality of scan data comprises generating the plurality of scan data by computing the results of the respective scans by the plurality of first integrated circuits. 如請求項17之控制方法，更包括經由該第二積體電路與外部溝通。 The control method of claim 17, further comprising communicating with the outside via the second integrated circuit. 如請求項17之控制方法，更包括利用該第二積體電路控制該電容式觸控裝置的整體運作。 The control method of claim 17, further comprising controlling the overall operation of the capacitive touch device by using the second integrated circuit.
TW097112057A 2008-04-02 2008-04-02 Capacitive touch device and its control method TWI421754B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
TW097112057A TWI421754B (en) 2008-04-02 2008-04-02 Capacitive touch device and its control method
JP2008152548A JP2009252230A (en) 2008-04-02 2008-06-11 Capacitive touch control device and control method therefor
US12/385,099 US8976121B2 (en) 2008-04-02 2009-03-31 Capacitive touch system and control method for a capacitive touch system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW097112057A TWI421754B (en) 2008-04-02 2008-04-02 Capacitive touch device and its control method

Publications (2)

Publication Number Publication Date
TW200943151A TW200943151A (en) 2009-10-16
TWI421754B true TWI421754B (en) 2014-01-01

Family

ID=41132824

Family Applications (1)

Application Number Title Priority Date Filing Date
TW097112057A TWI421754B (en) 2008-04-02 2008-04-02 Capacitive touch device and its control method

Country Status (3)

Country Link
US (1) US8976121B2 (en)
JP (1) JP2009252230A (en)
TW (1) TWI421754B (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201113770A (en) * 2009-10-05 2011-04-16 Raydium Semiconductor Corp Touch device
TWI409681B (en) * 2009-10-27 2013-09-21 Chunghwa Picture Tubes Ltd Capacitive touch display panel
TWI510979B (en) * 2009-11-23 2015-12-01 Elan Microelectronics Corp Passive Integrated Circuit Architecture and Its Control Method for Scanning Touch Panel
TW201124896A (en) * 2010-01-13 2011-07-16 Ideacom Technology Corp Detecting apparatus of capacitive touch panel and the method therefor
CN102207781A (en) * 2010-03-30 2011-10-05 鸿富锦精密工业（深圳）有限公司 Touch input device with improved resolution
US8810543B1 (en) * 2010-05-14 2014-08-19 Cypress Semiconductor Corporation All points addressable touch sensing surface
US20110282606A1 (en) * 2010-05-14 2011-11-17 Jameel Abdul Ahed Scalable capacitive touch system and method
US8635024B2 (en) * 2010-08-02 2014-01-21 International Business Machines Corporation Sensing device for determining weather event attributes
US8823657B2 (en) * 2010-09-07 2014-09-02 Apple Inc. Master/slave control of touch sensing
JP5743493B2 (en) * 2010-10-29 2015-07-01 ミネベア株式会社 INPUT DEVICE AND INPUT METHOD FOR ELECTRONIC DEVICE
CN103064546A (en) * 2011-10-21 2013-04-24 上海天马微电子有限公司 Built-in type touch display screen
KR20140141696A (en) * 2012-03-30 2014-12-10 가부시키가이샤 한도오따이 에네루기 켄큐쇼 Touchscreen, driving method thereof, and touchscreen module
KR101374018B1 (en) * 2012-04-24 2014-03-12 엘지디스플레이 주식회사 Apparatus and method for driving touch screen
KR102114488B1 (en) * 2013-11-05 2020-05-25 엘지디스플레이 주식회사 Touch sensing system and display device
KR20150114632A (en) * 2014-04-01 2015-10-13 삼성디스플레이 주식회사 Touch unit and touch display apparatus including the same
CN112005203B (en) * 2018-06-06 2024-04-23 株式会社和冠 Pen detection system
US10983553B2 (en) * 2018-08-24 2021-04-20 Synaptics Incorporated System and method for synchronizing sensing signals of integrated circuit chips
CN109752618A (en) * 2019-03-22 2019-05-14 敦泰电子有限公司 A kind of combination of touch screen detection chip and terminal device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI245253B (en) * 2002-07-18 2005-12-11 Gigno Technology Co Ltd LCD with touch-control function and the method thereof
TW200638248A (en) * 2005-04-19 2006-11-01 Elan Microelectronics Corp Capacitive touchpad with a physical key function

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5392058A (en) * 1991-05-15 1995-02-21 Sharp Kabushiki Kaisha Display-integrated type tablet device
GB9201949D0 (en) * 1992-01-30 1992-03-18 Jenkin Michael Large-scale,touch-sensitive video display
US5565658A (en) * 1992-07-13 1996-10-15 Cirque Corporation Capacitance-based proximity with interference rejection apparatus and methods
JP3170415B2 (en) * 1994-05-23 2001-05-28 シャープ株式会社 Electrostatic coupling input device
US7663607B2 (en) * 2004-05-06 2010-02-16 Apple Inc. Multipoint touchscreen
US8199114B1 (en) * 2000-09-26 2012-06-12 Denny Jaeger Touch sensor control devices
US8243027B2 (en) * 2006-06-09 2012-08-14 Apple Inc. Touch screen liquid crystal display
KR100886824B1 (en) * 2006-08-18 2009-03-05 삼성전자주식회사 Touch screen display device including hybrid touch screen panel controller and method thereof
TW200822019A (en) * 2006-11-08 2008-05-16 Amtran Technology Co Ltd Touch screen on-screen display (OSD) control device and control method thereof and liquid crystal displays
US8094128B2 (en) * 2007-01-03 2012-01-10 Apple Inc. Channel scan logic
US7848825B2 (en) * 2007-01-03 2010-12-07 Apple Inc. Master/slave mode for sensor processing devices
TW200949638A (en) * 2008-05-22 2009-12-01 Novatek Microelectronics Corp Touch detecting device capable of saving electricity
TWI381294B (en) * 2008-08-15 2013-01-01 Au Optronics Corp Touch sensing apparatus and sensing signal processing method thereof
US8358285B2 (en) * 2009-05-06 2013-01-22 Silicon Laboratories Inc. Method and apparatus for scanning a touchscreen with multi-touch detection using master/slave devices
US20100328237A1 (en) * 2009-06-24 2010-12-30 Yaw-Guang Chang Touch control system for controlling touch panel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI245253B (en) * 2002-07-18 2005-12-11 Gigno Technology Co Ltd LCD with touch-control function and the method thereof
TW200638248A (en) * 2005-04-19 2006-11-01 Elan Microelectronics Corp Capacitive touchpad with a physical key function

Also Published As

Publication number Publication date
TW200943151A (en) 2009-10-16
US20090251437A1 (en) 2009-10-08
JP2009252230A (en) 2009-10-29
US8976121B2 (en) 2015-03-10

Similar Documents

Publication Publication Date Title
TWI421754B (en) Capacitive touch device and its control method
JP4691137B2 (en) Capacitive touch control device and data transmission method applied to the device
US8072429B2 (en) Multi-axial touch-sensor device with multi-touch resolution
TWI475450B (en) Picture input type image display system
US9454274B1 (en) All points addressable touch sensing surface
TWI470530B (en) Touch sensors and touch display apparatus and driving method thereof
JP6045924B2 (en) Touch panel display device and touch panel controller
TWI375904B (en)
JP5119054B2 (en) Capacitive touch control device and data transmission method applied thereto
JP6779655B2 (en) Touch screen display device and its driving method
TWI528248B (en) Capacitive touch device, touch sensing control method and control circuit applied in capacitive touch device
US11418191B2 (en) Multiple controllers for a capacitive sensing device
KR102335789B1 (en) Touch screen having MUX and sensor switch
TWI428809B (en) Two - dimensional structure of the capacitive touchpad positioning method
CN103576955B (en) Mutual capacitance type touch panel and touch system
US20110025644A1 (en) Touch Control Apparatus, Associated Sensing Control Apparatus and Method Thereof
JP5832772B2 (en) Touch panel, touch panel system, and electronic device
CN101561731B (en) Capacitance touch control device and control method thereof
CN103970384B (en) Capacitive touch panel, sensing method thereof, touch device and input device
KR102335790B1 (en) Touch screen having MUX and sensor switch
TWI552041B (en) Touch panel and sensing method thereof
TWI393039B (en) Capacitive touch device and its control method
TWI439917B (en) Capacitive touch circuit combination
TW201727461A (en) Capacitive fingerprint sensing apparatus
TW201301094A (en) Touch module for outputting sensed data array